<template>
  <el-container class="home-container">
    <!--头部-->
    <el-header>
      <div>
        <img src="../assets/kkx1.png" />
        <span>智能售猪管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!--主体-->
    <el-container>
      <!--主体左边部分-->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409eff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <el-submenu :index="item.id+''" v-for="item in menuList" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <!--子菜单-->
            <el-menu-item :index="'/' + subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="setActivePath('/' + subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <!--主体右边部分-->
      <el-main>
          <!--路由占位符-->
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menuList: [],
      // 主菜单图标
      iconsObj: {
        125: 'iconfont icon-users',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      // 选中的子菜单路径
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.getActivePath()
  },
  methods: {
    logout() {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    // 获取菜单
    async getMenuList() {
      const { data: res } = await this.$http.get('menus')
      if (res && res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.menuList = res.data
    },
    // 控制菜单折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 子菜单选中样式
    setActivePath(activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    },
    // 设置选中样式
    getActivePath() {
      this.activePath = window.sessionStorage.getItem('activePath')
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
  }
  span {
    margin-left: 15px;
  }
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: solid 0px #e6e6e6;
  }
}

.el-main {
  background-color: #eaedf1;
}

img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
